G'day guys, first post so be gentle.
I need help with some code to work out if a variable (string) contains any integers. The valid variable (string) must contain only letters.
Also need to be able to work out if a variable contains only integers.
Any help greatly appreciated. (7 Replies)
hi,
How to check a given file for a string and if it's not found, exit out ofthe script?
e.g. a file Test123 is there whose header begins with #bt and trailer begins with #ed.
I have to check if the header and trailer matches as above and if not, exit out of the script.
How can we do it in... (2 Replies)
How to check if a string in contained in another string ?
Like
Whether the String "brown" is contained in
"A quick brown fox jumps over a lazy the dog" (1 Reply)
How could I check if a string variable contains at least (or only) 2 characters, and check and make sure that the string does not contain any numeric digits?...I need to know how to do this as simple as possible. and I am using the Ksh shell. Thanks. (1 Reply)
lets think str is a variable...how can i check it is pure alphabetic or not
for numeric checking i have used echo $str|grep -v ]
but the command echo $str|grep -v ] is not working (1 Reply)
Hi,
How do i check if there are any files present in the folder with some specific starting string.
For eg :- I have used this where Source_File is filename parameter.
if
then
return 2
fi
But in my case the source file name is not constant. The only constant thing is... (10 Replies)
I am parsing a file and I get differnt results everytime.
Sometimes I get 12s sometimes I get 54m and sometime 3h..
v1=12s or v1=54m or v1=3h
12s - 12 seconds
54m - 54 minutes
3h - 3 hour
I have to write a script in such a way that it whenever v1 is in minutes,
I should strip "m"... (14 Replies)
Hi ,
I have a file likeA-0044150|ABC/Frito/
A-0044150|GFHU
A-0150075|Bud Racing
A-0187811|Bud Light
A-0187811|RW&B signmaking
I Want the o/p likeA-0044150|ABC/Frito/,GFHU
A-0150075|Bud Racing
A-0187811|Bud Light,RW&B signmaking (2 Replies)
what is the purpose of below specially "-z" string checking, how?
pid=`ps ax |grep java`
if (3 Replies)
Discussion started by: learnbash
3 Replies
LEARN ABOUT MINIX
test
TEST(1) General Commands Manual TEST(1)NAME
test, [ - test for a condition
SYNOPSIS
test expr
[ expr ]
OPTIONS
(none)
EXAMPLES
test -r file # See if file is readable
DESCRIPTION
Test checks to see if files exist, are readable, etc. and returns an exit status of zero if true and nonzero if false. The legal operators
are
-r file true if the file is readable
-w file true if the file is writable
-x file true if the file is executable
-f file true if the file is not a directory
-d file true if the file is a directory
-s file true if the file exists and has a size > 0
-t fd true if file descriptor fd (default 1) is a terminal
-z s true if the string s has zero length
-n s true if the string s has nonzero length
s1 = s2 true if the strings s1 and s2 are identical
s1 != s2 true if the strings s1 and s2 are different
m -eq m true if the integers m and n are numerically equal
The operators -gt, -ge, -ne, -le, and -lt may be used as well. These operands may be combined with -a (Boolean and), -o (Boolean or), !
(negation). The priority of -a is higher than that of -o. Parentheses are permitted, but must be escaped to keep the shell from trying to
interpret them.
SEE ALSO expr(1), sh(1).
TEST(1)